<template>
  <div class="type-nav">
    <div class="container">
      <div @mouseleave="leaveShow" @mouseenter="enterShow">
        <h2 class="all">全部商品分类</h2>
        <transition name="sort">
          <div class="sort" v-show="showMenu">
            <div class="all-sort-list2" @click="goSearch">
              <div
                class="item"
                :class="currentIndex == index ? 'active' : ''"
                v-for="(c1, index) in cateList"
                :key="index"
                @mouseenter="changeIndex(index)"
              >
                <h3>
                  <span
                    :data-categoryName="c1.categoryName"
                    :data-category1Id="c1.categoryId"
                    >{{ c1.categoryName }}</span
                  >
                </h3>
                <div class="item-list clearfix" v-show="currentIndex == index">
                  <div class="subitem">
                    <dl
                      class="fore"
                      v-for="(c2, index) in c1.categoryChild"
                      :key="index"
                    >
                      <dt>
                        <span
                          :data-categoryName="c2.categoryName"
                          :data-category2Id="c2.categoryId"
                          >{{ c2.categoryName }}</span
                        >
                      </dt>
                      <dd>
                        <em
                          v-for="(c3, index) in c2.categoryChild"
                          :key="index"
                        >
                          <span
                            :data-categoryName="c3.categoryName"
                            :data-category3Id="c3.categoryId"
                            >{{ c3.categoryName }}</span
                          >
                        </em>
                      </dd>
                    </dl>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </transition>
      </div>
      <nav class="nav">
        <a href="###">服装城</a>
        <a href="###">美妆馆</a>
        <a href="###">尚品汇超市</a>
        <a href="###">全球购</a>
        <a href="###">闪购</a>
        <a href="###">团购</a>
        <a href="###">有趣</a>
        <a href="###">秒杀</a>
      </nav>
    </div>
  </div>
</template>
<script>
import { reqgetCategoryList } from "@/api/index";
export default {
  name: "TypeNav",
  data() {
    return {
      cateList: [],
      currentIndex: -1,
      showMenu: true,
    };
  },
  mounted() {
    this.getCateList();
  },
  activated() {
    if (this.$route.path != "/") {
      this.showMenu = false;
    }
  },
  methods: {
    getCateList() {
      reqgetCategoryList()
        .then((res) => {
          if (res.code == 200) {
            this.cateList = res.data.slice(0, 15);
          }
        })
        .catch((err) => {
          console.log(err);
        });
    },
    changeIndex(index) {
      this.currentIndex = index;
    },
    goSearch(event) {
      // event.target 触发事件的元素
      let node = event.target;
      // node.dataset当前触发元素的自定义属性
      let { categoryname, category1id, category2id, category3id } = node.dataset;

      if(categoryname){
        let location = { name: 'search' };
        let query = { categoryName: categoryname }
   
        if(category1id) {
          query.category1Id = category1id
        }else if(category2id) {
          query.category2Id = category2id
        }else{
          query.category3Id = category3id
        }

        if(this.$route.params) {
          location.params = this.$route.params
          location.query = query
          
          this.$router.push(location)
        }
      }
    },
    enterShow() {
      if (this.$route.path != "/") {
        this.showMenu = true;
      }
    },
    leaveShow() {
      this.currentIndex = -1;
      if (this.$route.path != "/") {
        this.showMenu = false;
      }
    },
  },
};
</script>
<style lang="less" scoped>
.type-nav {
  border-bottom: 2px solid #e1251b;

  .container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    position: relative;

    .all {
      width: 210px;
      height: 45px;
      background-color: #e1251b;
      line-height: 45px;
      text-align: center;
      color: #fff;
      font-size: 14px;
      font-weight: bold;
    }

    .nav {
      a {
        height: 45px;
        margin: 0 22px;
        line-height: 45px;
        font-size: 16px;
        color: #333;
      }
    }

    .sort {
      position: absolute;
      left: 0;
      top: 45px;
      width: 210px;
      height: 461px;
      position: absolute;
      background: #fafafa;
      z-index: 999;

      .all-sort-list2 {
        .item {
          cursor: pointer;
          &.active {
            background: #4cb9fc;
            color: #fff;
          }
          span {
            color: #333;
          }
          h3 {
            line-height: 30px;
            font-size: 14px;
            font-weight: 400;
            overflow: hidden;
            padding: 0 20px;
            margin: 0;
          }

          .item-list {
            position: absolute;
            width: 734px;
            min-height: 460px;
            background: #f7f7f7;
            left: 210px;
            border: 1px solid #ddd;
            top: 0;
            z-index: 9999 !important;

            .subitem {
              float: left;
              width: 650px;
              padding: 0 4px 0 8px;

              dl {
                border-top: 1px solid #eee;
                padding: 6px 0;
                overflow: hidden;
                zoom: 1;

                &.fore {
                  border-top: 0;
                }

                dt {
                  float: left;
                  width: 54px;
                  line-height: 22px;
                  text-align: right;
                  padding: 3px 6px 0 0;
                  font-weight: 700;
                }

                dd {
                  float: left;
                  width: 415px;
                  padding: 3px 0 0;
                  overflow: hidden;

                  em {
                    float: left;
                    height: 14px;
                    line-height: 14px;
                    padding: 0 8px;
                    margin-top: 5px;
                    border-left: 1px solid #ccc;
                  }
                }
              }
            }
          }

          &:hover {
            .item-list {
              display: block;
            }
          }
        }
      }
    }
    .sort-enter {
      height: 0;
    }
    .sort-enter-to {
      height: 461px;
    }
    .sort-enter-active {
      transition: all 0.5s linear;
    }
  }
}
</style>